SOLUTION: a stamp collector has some 15 cent stamps and some 20 cent stamps. the number of 15 cent stamps is eight less than three times the number of 20 cent stamps. the total value is $4.
Algebra.Com
Question 291679: a stamp collector has some 15 cent stamps and some 20 cent stamps. the number of 15 cent stamps is eight less than three times the number of 20 cent stamps. the total value is $4. find the number of each type of stamp in the collection
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Complex numbers mean involving i the square root of -1.
f=15 centers t=20 centers
f=-8+3t
15f+20t=400
f=16 t=8
RELATED QUESTIONS
A stamp collector has some 15 cent stamps and some 20 cent stamps. The number of 15 cent... (answered by Earlsdon,ptaylor)
A stamp collection consist of 3, 8 and 15 cent stamps. The number of 8 cent stamps is one (answered by oscargut,kdr,Electrified_Levi)
A stamp collection consist of 3,8, and 15 cent stamps. The number of 8 cent stamps is... (answered by Mathtut)
A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is... (answered by solver91311)
A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is... (answered by ankor@dixie-net.com)
A stamp collection consists of 3,8, and 15 stamps. The number of 8 cent stamps is one... (answered by mangopeeler07)
A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 stamps is one... (answered by ankor@dixie-net.com)
A stamp collector has 4 cent, 3 cent and 2 cent stamps. If he has 3 more 3 cent stamps... (answered by stanbon)
A stamp collections consists of 3,8,15 cent stamps. The number of 8 cent stamps is 1... (answered by richwmiller)